University of Illinois system, UI Health to require employees to be vaccinated Ryan Voyles 3 years ago Aerial of Main Quadrangle looking northwest including Foellinger Auditorium, Gregory Hall, Lincoln Hall, the English Building, Henry Administration, the Illini Union, Harker Hall, Noyes Laboratory, Davenport Hall, Foreign Language building. The University of Illinois system, as well as UI Health, will require all employees to be vaccinated for COVID-19.To access this content, you must purchase 1 Year Health News Illinois Subscription or 1 Year Group Subscription - Up to 5 Users, or log in if you are a member.